/*
 * Copyright (c) 2020, yifengling0. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. No personal names or organizations' names associated with the
 *    Atomthreads project may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */


#ifndef _E2P_
#define _E2P_

#ifdef __cplusplus
extern "C" {
#endif

#include "iosdrv.h"
#include "atommutex.h"

typedef struct _e2pOps {
    int (*e2p_ioctl)(FD fd, int function, void* arg);
}E2pOps;

typedef struct E2prom E2prom;
struct E2prom {
    IOSDrv super;
    struct {
        int size;
        E2pOps* ops;
        ATOM_MUTEX lock;
    }Protected;
};

typedef struct E2pDataBlock{
    int addr;
    uint8_t *buffer;
    int size;
}E2pDataBlock;

enum _enE2pIoctl{
    E2P_WRITE = 0x01,
    E2P_READ = 0x02,
    E2P_MASK = 0x03,
    E2P_COMMIT = 0x04,
};

void E2PCreate(E2prom* e2p, const char *name, E2pOps *ops );
int E2PWrite(E2prom* e2p, E2pDataBlock *data, int commit);
int E2PRead(E2prom* e2p, E2pDataBlock *data);

#ifdef __cplusplus
}
#endif

#endif  /* _E2P_ */